Roof Ventilation Upgrade in San Bruno, CA

Ventilation is the most undervalued part of a roof replacement. Without balanced intake and exhaust, heat and moisture get trapped in the attic — cooking shingles from below, growing mold, and voiding manufacturer warranties. Every roof replacement we do in San Bruno includes a ventilation assessment, and most include an upgrade to a properly balanced system.

What This Service Includes

We calculate your attic's net free vent area against the 1:150 (or 1:300 with vapor barrier) standard, then design intake (soffit vents) and exhaust (ridge vent, and in some cases powered or solar vents) as a balanced system. The upgrade happens while the roof is open, when adding ridge vent or correcting blocked soffits is straightforward.

Signs You Need This Service

• Excessive attic heat in summer
• Mold or mildew on attic sheathing
• Frost on the underside of the deck in winter
• Curling shingles on a relatively young roof
• Ice dams despite adequate insulation

How We Do It Right

Ridge vent paired with clear soffit intake is the gold standard for most San Bruno homes — silent, passive, and effective. We also correct the common problems we find: painted-over soffit vents, blocked baffles, bathroom fans venting into the attic, and mixed exhaust types fighting each other. Proper ventilation can add years to a new roof's life and is required to keep most manufacturer warranties valid.

Roof Ventilation Upgrade for San Bruno Homes

persistent marine-layer fog, salt air, and gusty Peninsula winds make attic ventilation critical in San Bruno: trapped heat cooks shingles from below and voids warranties. We design balanced ventilation into every replacement.

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Frequently Asked Questions

How do I know if my attic ventilation is adequate?

Our inspection measures actual intake and exhaust vent area against your attic square footage. Most homes we inspect in San Bruno are under-ventilated, often significantly.

Is a ridge vent enough by itself?

Only if intake exists to feed it. A ridge vent with blocked or missing soffit vents can actually pull conditioned air from the house. Balance is everything — which is why we design the system, not just the vent.